is a comprehensive introductory biology textbook recognized for its experimental approach, emphasizing how scientific knowledge is discovered rather than just presenting facts. Core Publication Details

David E. Sadava, H. Craig Heller, Gordon H. Orians, William K. Purves, and David M. Hillis.

The textbook is structured into major parts that cover the full spectrum of biological sciences:

Focuses on the chemistry of life, cell structure, metabolism, and genetics (Chapters 1–20).